/* nav */
nav {
    padding: 30px;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,.05);
}
nav .nav-head{
    display: flex;
    justify-content: space-between;
}

/* 输入区域 */
nav .nav-search {
    position: relative;
}
/* nav 输入框 */
nav .nav-search p {
    border: 1px solid #ccc;
    border-radius: 3px;
}
nav .nav-search p input {
    width: 412px;
    height: 40px;
    border: none;
    outline: none;
    border-radius: 4px;
    padding-left: 10px;
}
nav .nav-search p span {
    display: inline-block;
    width: 39px;
    height: 38px;
    border-left: 1px solid #ccc;
    line-height: 38px;
    vertical-align: middle;
    text-align: center;
    cursor: pointer;
}

/* 输入联想词 */
nav .nav-search ol {
    position: absolute;
    left: 0;
    top: 42px;
    width: 100%;
    border: 2px solid #ccc;
    border-top: none;
    border-radius: 4px;
    background-color: #fff;
    padding: 10px 0;
    box-sizing: border-box;
    display: none;
    z-index: 100;
}
nav .nav-search ol li {
    padding: 5px 10px;
    color: #333;
}

/* 输入框下面那行列表 */
nav .nav-search ul {
    display: flex;
    font-size: 10px;
    color: #666666;
    height: 35px;
}
nav .nav-search ul li {
    margin: 0 2px;
    cursor: pointer;
    line-height: 35px;
}

/* 导航下面的tab */
nav .nav-tab {
    margin-top: 20px;
}
nav .nav-tab ul {
    float: left;
    height: 40px;
    line-height: 40px;
}
nav .nav-tab ul li {
    display: inline-block;
    height: 16px;
    padding: 0 45px 0 0;
    line-height: 16px;
    font-size: 16px;
    cursor: pointer;
}
/* 间隔竖线 */
nav .nav-tab .border-l {
    border-left: 1px solid #bbb;
}
nav .nav-tab .hover_code {
    display: none;
}
nav .nav-tab .hover_text:hover .hover_code{
    display: block;
}
.nav-tab li:hover, .nav-tab a:hover {
    color: #6744AC;
}
/* 公众号二维码区域 */
.hover_text {
    position: relative;
}
.hover_code.gzh {
    background-image: url(http://static1.biyao.com/pc/www/img/footer/public_code.png?v=biyao_4651e82);
}
.hover_code {
    display: none;
    width: 225px;
    background-color: #fff;
    background-size: 133px 133px;
    background-repeat: no-repeat;
    position: absolute;
    background-position: center 30px;
    top: 30px;
    left: -80px;
    box-shadow: 0 0 10px 0 rgba(0,0,0,.1);
    line-height: 40px;
    font-size: 16px;
    text-align: center;
    cursor: pointer;
    z-index: 100;
}
.hover_code span {
    color: #666;
    font-size: 16px;
    line-height: 22px;
    display: inline-block;
    margin-top: 180px;
    padding-bottom: 20px;
}
/* 我的必要 */
.hover_code.app {
    background-image: url(http://static2.biyao.com/pc/www/img/footer/app_code.png?v=biyao_975b48e);
}